We investigate the performance of three statistics, R <Subscript>1</Subscript>, R <Subscript>2</Subscript> (Glas in Psychometrika 53:525–546, <CitationRef CitationID="CR11">1988</CitationRef>), and M <Subscript>2</Subscript> (Maydeu-Olivares & Joe in J. Am. Stat. Assoc. 100:1009–1020, <CitationRef CitationID="CR23">2005</CitationRef>, Psychometrika 71:713–732, <CitationRef CitationID="CR24">2006</CitationRef>) to assess the overall fit of a one-parameter logistic model (1PL) estimated by...</citationref></citationref></subscript></citationref></subscript></subscript>

In some popular test designs (including computerized adaptive testing and multistage testing), many item pairs are not administered to any test takers, which may result in some complications during dimensionality analyses. In this paper, a modified DETECT index is proposed in order to perform...

Asymptotic cumulants of the Bayes and pseudo Bayes estimators of ability in item response theory are obtained up to the fourth order with the higher-order asymptotic variance under possible model misspecification. Typical estimators are treated as special cases of the (pseudo) Bayes estimator...

To assess if risk attitudes play a role in individual investors' reactions to adverse events in financial markets, members of a university community (N = 102) were administered a risk tolerance instrument. Additional survey items asked about financial, emotional and behavioural effects of the...